<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<style type="text/css">
*{
margin: 0;
padding: 0;
/* background-color: pink; */
}
.container{
overflow: hidden;
margin: 50px auto;
width: 340px;
height: 200px;
/* background-color: blue; */
}
ul{
list-style: none;
}
ul li{
float: left;
width: 70px;
height: 200px;
}
ul li .active{
width:200px;
height: 200px;
}
</style>
<body>
<div class="container">
<ul>
<li class="active" ><img src="donghuaImg/11.jpg" /></li>
<li><img src="donghuaImg/22.jpg" /></li>
<li><img src="donghuaImg/33.jpg" /></li>
</ul>
</div>
</body>
<script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.js"></script>
<script>
$(function(){
$('.container ul li').mouseover(function(){
//清空队列,防止无限改变宽, 放上的宽为200 其他兄弟li宽为70
$(this).stop(true).animate({width:200},500).siblings().animate({width:70},500)
})
})
</script>
</html>